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Power Radio. CYRF8935 Datasheet

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Power Radio. CYRF8935 Datasheet






CYRF8935 Radio. Datasheet pdf. Equivalent




CYRF8935 Radio. Datasheet pdf. Equivalent





Part

CYRF8935

Description

NL 2.4GHz Low Power Radio



Feature


Not recommended for new designs CYRF893 5 WirelessUSB™ NL 2.4 GHz Low Power R adio WirelessUSB™ NL 2.4 GHz Low Pow er Radio Features ■ Fully integrated 2.4 GHz radio on a chip ■ 1 Mbps over -the-air data rate ■ Transmit power t ypical: 0 dBm ■ Receive sensitivity t ypical: –87 dBm ■ 1 µA typical [1] current consumption in sleep state ■ Closed-loop frequency synthesis ■ Su.
Manufacture

Cypress Semiconductor

Datasheet
Download CYRF8935 Datasheet


Cypress Semiconductor CYRF8935

CYRF8935; pports frequency-hopping spread spectrum ■ On-chip packet framer with 64-byte first in first out (FIFO) data buffer ■ Built-in auto-retry-acknowledge pro tocol simplifies usage ■ Built-in cyc lic redundancy check (CRC), forward err or correction (FEC), data whitening ■ Supports DC ~ 12 MHz SPI bus interface ■ Additional outputs for interrupt r equest (IRQ) generation ■ Di.


Cypress Semiconductor CYRF8935

gital readout of received signal strengt h indication (RSSI) ■ 4 × 4 mm quad flat no-leads (QFN) package, bare die, or wafer sales Functional Description W irelessUSB™-NL, optimized to operate in the 2.4-GHz ISM band, is Cyp .


Cypress Semiconductor CYRF8935

.

Part

CYRF8935

Description

NL 2.4GHz Low Power Radio



Feature


Not recommended for new designs CYRF893 5 WirelessUSB™ NL 2.4 GHz Low Power R adio WirelessUSB™ NL 2.4 GHz Low Pow er Radio Features ■ Fully integrated 2.4 GHz radio on a chip ■ 1 Mbps over -the-air data rate ■ Transmit power t ypical: 0 dBm ■ Receive sensitivity t ypical: –87 dBm ■ 1 µA typical [1] current consumption in sleep state ■ Closed-loop frequency synthesis ■ Su.
Manufacture

Cypress Semiconductor

Datasheet
Download CYRF8935 Datasheet




 CYRF8935
CYRF8935
WirelessUSB™ NL 2.4 GHz
Low Power Radio
WirelessUSB™ NL 2.4 GHz Low Power Radio
Features
Fully integrated 2.4 GHz radio on a chip
1 Mbps over-the-air data rate
Transmit power typical: 0 dBm
Receive sensitivity typical: –87 dBm
1 µA typical [1] current consumption in sleep state
Closed-loop frequency synthesis
Supports frequency-hopping spread spectrum
On-chip packet framer with 64-byte first in first out (FIFO) data
buffer
Built-in auto-retry-acknowledge protocol simplifies usage
Built-in cyclic redundancy check (CRC), forward error
correction (FEC), data whitening
Supports DC ~ 12 MHz SPI bus interface
Additional outputs for interrupt request (IRQ) generation
Digital readout of received signal strength indication (RSSI)
4 × 4 mm quad flat no-leads (QFN) package, bare die, or wafer
sales
Functional Description
WirelessUSB™-NL, optimized to operate in the 2.4-GHz ISM
band, is Cypress's third generation of 2.4-GHz low-power RF
technology, bringing the next level of low-power performance
into a small 4-mm × 4-mm footprint. WirelessUSB-NL
implements a Gaussian frequency-shift keying (GFSK) radio
using a differentiated single-mixer, closed-loop modulation
design that optimizes power efficiency and interference
immunity. Closed-loop modulation effectively eliminates the
problem of frequency drift, enabling WirelessUSB-NL to transmit
up to 255-byte payloads without repeatedly having to pay power
penalties for re-locking the phase locked loop (PLL) as in
open-loop designs.
Among the advantages of WirelessUSB-NL are its fast lock times
and channel switching, along with the ability to transmit larger
payloads. Use of longer payload packets, compared to multiple
short payload packets, can reduce overhead, improve overall
power efficiency, and help alleviate spectrum crowding.
Combined with Cypress's enCoRe™ family of USB and wireless
microcontrollers, WirelessUSB-NL also provides the lowest bill
of materials (BOM) cost solution for PC peripheral applications
such as wireless keyboards and mice, as well as best-in-class
wireless performance in other demanding applications such as
toys, remote controls, fitness, automation, presenter tools, and
gaming.
Applications
Wireless keyboards and mice
Handheld remote controls
Wireless game controllers
Hobby craft control links
Home automation
Industrial wireless links and networks
Cordless audio and low-rate video
Note
1. Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VIN = 3 VDC, Ta = +25 °C.
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-61351 Rev. *K
• San Jose, CA 95134-1709 • 408-943-2600
Revised May 19, 2017




 CYRF8935
CYRF8935
Logic Block Diagram
VIN VOUT
VDD_IO
PKT
FIFO
SPI_SS
CLK
MISO
MOSI
LDO Linear
Regulator
RST_n
Pwr/ Reset
BRCLK [2]
Xtal Osc
XTALi XTALo
VDD1 ...VDD7
GFSK
Modulator
Synthesizer VCO
PA
GFSK
Demodulator
GND GND
X
Image
Rej. Mxr.
LNA + BPF
ANT
ANTb
Note
2. BRCLK signal is available on bare die only, not packaged parts.
Document Number: 001-61351 Rev. *K
Page 2 of 40




 CYRF8935
CYRF8935
Contents
Pin Configuration ............................................................. 4
Pin Descriptions ............................................................... 4
Functional Overview ........................................................ 5
Power-on and Register Initialization Sequence ........... 5
Enter Sleep and Wakeup ............................................ 6
Packet Data Structure ................................................. 6
FIFO Pointers .............................................................. 6
Packet Payload Length ............................................... 6
Framer: Packet Length Handling ................................. 7
MCU or Application Handles Packet Length ............... 9
Typical Application ......................................................... 12
Setting the Radio Frequency ..................................... 13
Crystal Oscillator ....................................................... 13
Minimum Pin Count ................................................... 14
Reset Pull-up ............................................................. 14
Transmit Power Control ............................................. 14
Reading RSSI ............................................................ 14
Automatic ACK .......................................................... 15
Receive CRC and FEC Result .................................. 15
Sync Word Selection ................................................. 15
Scramble On/Off Selection ........................................ 16
Measuring Receiver Sensitivity ................................. 16
Receive Spurious Responses ................................... 17
RF VCO Calibration ................................................... 17
Regulatory Compliance ................................................. 18
United States FCC .................................................... 18
Register Settings for Test Purposes .......................... 19
Recommendations for PCB Layout .............................. 19
Antenna Type and Location .......................................... 19
IR Reflow Standard ......................................................... 20
Register Definitions ........................................................ 21
Recommended Register Values ................................ 26
Absolute Maximum Ratings .......................................... 28
Operating Range ............................................................. 28
Electrical Characteristics ............................................... 28
SPI .................................................................................... 31
SPI Transaction Formats and Timing ........................ 31
Specifications ............................................................ 32
Electrical Operating Characteristics ............................. 33
State Diagram ................................................................. 34
Ordering Information ...................................................... 35
Ordering Code Definitions ......................................... 35
Package Diagram ............................................................ 36
Acronyms ........................................................................ 37
Document Conventions ................................................. 37
Units of Measure ....................................................... 37
Document History Page ................................................. 38
Sales, Solutions, and Legal Information ...................... 40
Worldwide Sales and Design Support ....................... 40
Products .................................................................... 40
PSoC® Solutions ...................................................... 40
Cypress Developer Community ................................. 40
Technical Support ..................................................... 40
Document Number: 001-61351 Rev. *K
Page 3 of 40



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